Valve for gas-engines.



110.722,672. PATLNTLD MAR. 111, 1903.

- L. P. BURGER.

VALVE POR GAS ENGINES. APPLIOATION FILED Novfn, 1201. A no MODEL. 2HLETs-SHLLT 1,.,

No. 722,672. PATBNTBD MARi 17, 190s.

' L..F.BURGER. f

VALVE FOR GAS BNGINES.

APPLICATION FILED NOVQll, 1901 [NVE/v TOR UNITED STATES vPATENT ERICE.

LEOPOLD E. BURGER, OE'ANDERsON, INDIANA, Ass'IGNOR 'ro vvOOLLEIT EOUNDRYAND MACHINE WORKS, OE ANDERSON, INDIANA.

VALVE FOR GAS-ENGINES.

SPECIFICATION forming part ofV Letters Patent No. 722,672, dated March17, 1903. Application iiled November 11, 1901. Serial No. 82,070. (Nomodel.)

To @ZZ whom it may concern.:

Be it known that I, LEOPOLD F. BURGER, a citizen of the United States,residing at Anderson, in the county of `Madison, State of Indiana, haveinvented certain new and useful Improvements in Valves for Gas-Engines,of which the following isa specification, reference being had therein tothe accompanying:

drawings.

This invention relates to gas-engines, and particularly to that class inwhich a liquid fuel is admitted at the intake-valve and af-- terwardvaporized.

The invention has for an object to improve' the construction of thefuelcontrolling valve, whereby the air and fuel inlets may be opened inunison or the flow of Oil stopped,r

While the air-valve continues to open by disconnecting the valves.`

A further object of theinvention is to improve the construction of the fuelinlet,

whereby the same discharges behind the airdetail section of thefuel-inlet-valve casing.k

Fig. 5 is a vertical section through the fuelreservoir, and Fig. 6 ahorizontal section on the line 6 6 of Fig. 5.

Like letters of reference refer to like parts in the several gures ofthe drawings.

The present invention is capable of application to any suitable class ofengines, but

for the purpose of illustration is herein shown f in connection with anengine and valve, op,- erating mechanism disclosed in my application,Serial No. 79,374, iiled of evendate herewith, so that the principalfeatures of novelty herein refer to the feed of liquid fuel and meansfor controlling the same.

In the form of engine shown the letter A designates a cylinder havingtherein a piston A', connected to drive a crank-shaft A2. This cylinderis provided at one end with a combustion-chamber A3, communicating withan exhaust-valve A4, adapted to Vbedriven by a gearing A5 from thecrank-shaft A2. This shaft is also provided with a ball speedgovernor,as indicated at C, Which is pivotallyV connected to a sliding collar C',bearing against a bell-crank C2, from which a connecting-rod C3 extendsto a slide-bar G for .operating the valve-connecting device, all as morefully shown and described in the application hereinbefore referred to.

Projecting into the combustion-chamber A3 is a valve-casing D, carryingat its end an air-valve D', which is provided with a stem D2, passedthrough a bearing D3 and having its extended end D4 projectedbeyond thecasing and bearing a collar D5. The casing D is provided below thebearing D3 with aseries Yof air-inlet openings D6, while the stem D2 ofthe air-valve has secured thereon a bearing-nut D7, against which aspring E bears and extends to the bearing D3 for the purpose ofrestoring the valve to its seat. This spring E is coiled, and within thesame an oppositely-coiled heavier spring E' of greater tension and lesslength is disposed, so as'to check or cushion the Opening action of thevalve. The lower portion D8 of the valve-casing is provided with aguide-sleeve D9, through which the extended portion D4 of the valve-stempasses. Between this stem and guide a tubular extension F from a push-Yplate F is disposed, and this plate is adapted Vto rest in a suitableseat F2, While the end of the extension thereof is provided with apivoting-lug F2, carrying a pawl G', controlled vby the slide-bar G bymeans of the pins G2,

carried by said bar at opposite sides thereof, While th'epoint of thepawl or dog G' is adapted to bear against the collar D5 when the partsare connected together,as shown in Fig. 3. Between the lug F2 and thebody of the valvecasing a vspring E2 extends for the purpose ofrestoring the push-plate F and holding the same upon its seat. When thevalve-casing D is placed in position upon the engine, as

l shown in Fig. l, the air-inlet D6 communicates with an air-space A7 inthe engine-casing which is open to the atmosphere.

The fuel-valve H is provided with an extended stem H', resting upon thepush-plate F, and is held in contact therewith by means of a coiledspring H2. This valve is located within a casing H3, provided With avalveseat H4, an injector-opening H7, and a feedchannel H5,communicating at it its end With a reservoirI, Figs. 5 and 6. Above thevalveseat H3 a removable cap H6 is applied for retaining the spring H2in position above the valve. The reservoir is supplied with a suitableinlet-opening I and outlet I2 at one side, which communicate with thepipes Is and I4., respectively, the former of which extends through apump I5 to a storage-tank I6 for the fuel, While the latter communicatesdirectly tween the reservoir and tank by means of the pipe I4, as shownin Fig. l. The pump I5 may be of any desired construction-for instance,provided With a depressible piston I, adapted to be restored by a springI7 and to bek operated by a crank-arm J, having the member J thereof incontact With a drivingcam J2. Upon the shaft of this cam a pinion .I3 isprovided, Which in turn meshes with a pinion J4 upon the crank-shaft A2of the engine. The result of this connection is to operate the pump inthe continued rotation of the shaft, so as to supplyaconstant andsuficient quantity of fuel under an equal pressure to the fuel-valve Hby gravity from the reservoir.

In the class of engine shown when the piston A is moved outward air andfuel are drawnv into the cylinder through the airvalve D' and thefuel-valve H, which are connected to operate together by means of apawl, carried by the push plate F. The oil or other fuel which passesthe valve H when the same is raised by the push-plate F passes throughau injector or inlet H7, formed in the casing H3, thus striking thesprings and being thoroughly distributed, so that it is vaporized almostinstantly. This vaporizing occurs in the body of air which has enteredthrough the ports D5, and a thorough mixing is thus eected. In thereturn movement of the piston the air and fuel comprising the explosivemixture are compressed and then ignited by any suitable means. The forceof the explosion drives the piston outward again until at the end of thestroke the exhaust-valve is opened and retained in that position untilthe piston has returned to lar on the stem of the air-valve, thusleaving this valve free tooperate under the suction from the engine,While the fuel-valve H will not be effected thereby. The capacity of thepassage H5 may be controlled by means of a needle-valve H8, locatedtherein, as shown at IS in Fig. 5.

The details of construction described and illustrated in my applicationhereinbefore referred to will not be specifically described in thiscase, as they are not of an essential character to the operation of thisinvention.

It will be obvious that changes may be made in the details ofconstruction and configuration Without departing from the spirit oftheinvention as dened in the appended claims.

Having described myl invention and set forth its merits, what I claim,and desire to secure by Letters Patent, is-

l. In a gas-engine, a valve-casing comprisinga mixing-chamber, anair-Valve at one endl of said chamber provided With a stem extendingtherethrough, a fuel-valve and casing located Within said chamber, apush-plate slidingly mounted upon said stem' Within the mixing-chamberfor operating said fuel-valve, and means for connecting said plate tosaid stem; substantially as specied.

2. In a gas-engin e, a valve-casing comprising a mixing-chamber, anair-valve at one end of said chamber provided with a stem extendingtherethrough, a fuel-valve and casing located Within said chamber, apush-plate slidngly mounted upon said stem Within the mixing-chamber foroperating said fuel-valve, and a shifting device carried by saidpushplate to engage the free end of said stem; substantially asspecified.

3. In a gas-engine, a valve-casing comprising a mixing-chamber,anair-valve at one end of said chamber provided with a stem extendingtherethrough, a fuel-valve and casing located within said chamber, apush-plate slidingly mounted upon said stem Within the.

mixing-chamber for operating said fuel-valve, means for connecting saidplate to said stem, a reservoir communicating with said fuelvalveadjacent thereto, a supply-tank located below said reservoir, a feed andreturn pipe circuit between said tank and reservoir, and

`a pump in said circuit to effect the feed to the reservoir;substantially as specified.

' 4. In a gas-engine, a valve-casing comprisinga mixing-chamber, anair-valve at one end thereof and provided with a stem extendingtherethrough, a push-plate Within the mixing chamber having` a tubularextension around said stem, means for connecting said extension and stemtogether and for disconnecting the same, a fuel-valve and casingdisposed Within said mixing-chamber, and a stem from said fuel-Valvecontacting With the push-plate for operating said fuel-valve in themovement of said plate; substantially as specified.

5. In a gas-engine, a valve-casing comprising a mixing-chamber, anair-valve at one end ICO IIO

thereof and provided with a stem extending therethrough, a push-platewithin the mixing chamber having a tubular extension around said stem,means for connecting said extension and stems together and for discon-vnecting the same, a fuel-valve and casing disposed within saidmixing-chamber, a stem from said fuel-valve in contact with said plate,a restoring spring above said fuelvalve, a restoring-spring for saidpush-plate, a restoring-spring for said air-valve, and an inlet-passagein the casing of said fuel-valve communicating with the mixing-chamber;substantially as specified.

6. In a gas-engine, a valve-casing comprising a mixing-chamber, anairvalve at one end thereof provided with a stem passing therethrough, arestoring-spring surrounding said stem, a fuel-valve discharging withinsaid chamber, and a valvecasing for said fuelvalve having an openingadapted to discharge upon said spring; substantially as specified.

7. In a gas-engine, a casing for a fuel-valve comprising aspring-chamber at one end, a guide-sleeve at the opposite end havingadjacent to said chamber a discharge-chamber and opening therefromlaterally to said sleeve, a valve-seat disposed between saidspringchamber and discharge-chamber, and a feedpassage communicatingwith said springchamber and extending parallel with said guide-sleeve;substantially as specified.

8. In a gas-engine, an air-valve having an extended stem with contactmeans upon its free end, a push-plate provided with a tubular extensionslidingly mounted upon said stem, a valve-casing provided with a seatfor said plate and a guide for said tubular extension, a pivoted deviceupon the end of said extension to contact with the means upon the freeend of said stem, a restoring-spring extending 9. In a gas-engine, anair-valve having an extended stem with contact means upon its free end,a push-plate provided with a tubular extension slidingly mounted uponsaid stem, a valve-casing provided with a seat for said plate and aguide for said tubular extension, a pivoted device upon the end of saidextension to contact with the means upon the free end of said stem, arestoring-'spring extending between said stem and casing, a fuel-valvedisposed within the casing at one side of said push-plate and having astem in contact therewith, a crank-shaft for said engine, aspeedgovernor on said shaft connected to operate said pivoted device, anexhaust-valve, an operating cam therefor driven by said crankshaft, anda fuel-pump communicating with said fuel-valve and driven by saidcrankshaft; substantially as specified.

l0. In a gas-engine, a valve-casing, an airvalve at one end thereofhaving an extended stem, a push-plate provided with a tubular extensionaround said stem, a valve-casing provided with a lug upon saidextension, a restoring-spring extending between said lug and casing, afuel-valve disposed at one side of said push-plate, a pawl pivoted tosaid extension, a collar carried by said valve-stem beyond said pawl,and means for moving said pawl into or out of the path of said collar;substantially as specified.

In testimony whereof I aix my signature in presence of two witnesses. lLEOPOLD F. BURGER.

Witnesses:

JESSE L. VERMILLION, EDWARD F. VERMILLION.

